Bug 2064782

Summary:	Update machine type compatibility for QEMU 7.0.0 update [s390x]
Product:	Red Hat Enterprise Linux 9	Reporter:	Miroslav Rezanina <mrezanin>
Component:	qemu-kvm	Assignee:	Thomas Huth <thuth>
qemu-kvm sub component:	Machine Types	QA Contact:	smitterl
Status:	CLOSED ERRATA	Docs Contact:
Severity:	medium
Priority:	high	CC:	lijin, smitterl, thuth, virt-maint
Version:	9.1	Keywords:	Triaged
Target Milestone:	rc
Target Release:	9.1
Hardware:	s390x
OS:	Linux
Whiteboard:
Fixed In Version:	qemu-kvm-7.0.0-1.el9	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-11-15 09:54:33 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2064757, 2066823

Description Miroslav Rezanina 2022-03-16 14:23:32 UTC

With rebase to QEMU 7.0.0 we have to update compatibility bits for qemu-kvm package so we keep old machine types stable.

Please add necessary changes to ensure all machine types are compatible with previous versions.

Comment 7 smitterl 2022-04-26 15:57:16 UTC

Pre-verified with:
1.) bi-directional migration test 9.0 -> 9.1 -> 9.0
2.) Critical regression testing for QEMU 7.0 (s. bz2064757)

For 1.)
Guest kernel:

kernel-5.14.0-70.13.1.el9_0.s390x


Source:

kernel-5.14.0-70.13.1.el9_0.s390x
libvirt-8.0.0-8.el9_0.s390x
qemu-kvm-6.2.0-11.el9_0.2.s390x


Destination:

kernel-5.14.0-78.el9.s390x
libvirt-8.2.0-1.el9.s390x
qemu-kvm-7.0.0-1.el9.s390x


# virsh dumpxml vm
...
  <os>
    <type arch='s390x' machine='s390-ccw-virtio-rhel9.0.0'>hvm</type>
    <boot dev='hd'/>
  </os>
  <cpu mode='custom' match='exact' check='partial'>
    <model fallback='forbid'>gen15a-base</model>
    <feature policy='require' name='vx'/>
    <feature policy='require' name='vxeh'/>
  </cpu>
...

Comment 11 errata-xmlrpc 2022-11-15 09:54:33 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: qemu-kvm security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:7967